Author Topic: other options for opamp? keyboard?  (Read 8090 times)

SEVEN26

other options for opamp? keyboard?
« on: December 14, 2005, 01:13:30 AM »
hey guys. i'm new and obviously a noob... i've been reading around and learning a lot. i'm thinking about building this op amp circuit for a kids toy keyboard i bought at good will.  i thought that would be pretty fun.. but i don't know if i can use this circuit because it doesn't use all of the 8 pins. the ic in the keyboard does.   i was under the impression that you could use this circuit for just about any op amp. is that the case?

the ic is 3860 JRC 8174J.  i don't know if that helps. but it would be cool to ad this op amp to it
 

thanks

aron

Re: other options for opamp? keyboard?
« Reply #1 on: December 15, 2005, 01:06:14 PM »
Sorry, this circuit is really for only one of the op amps. It will not work as a replacement for a dual op amp chip.

Steben

Re: other options for opamp? keyboard?
« Reply #2 on: December 16, 2005, 05:39:35 AM »
Build two of them and then you can use it as a dual.
But of course it takes more precious space.
Rules apply only for those who are not allowed to break them

SEVEN26

Re: other options for opamp? keyboard?
« Reply #3 on: December 16, 2005, 12:26:54 PM »
thanks quick for the responce.  obvioulsy i have little understanding about this subject...
building two? sounds kind of odd but could be fun... i'll check into the pricing of a project like that.  i might just build a distortion pedal and house it in the keyboard.  anyway i've got a lot of reading up to do but i'm exited about this project. its going to be a chrismas present to my brother (hopefully  :))

thanks guys